OpenAI retiring 11 model IDs on July 23; developers urged to migrate now

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OpenAI has scheduled the retirement of 11 API model snapshots, including several Codex and chat-latest variants, on July 23, 2026. Most Codex-line models are being replaced by gpt-5.5, while search-preview and mini variants will move to gpt-5.4-mini. Developers who have hardcoded these model IDs in code, environment files, or config tables have very little time to act before the cutoff. A key risk is model IDs that were never hardcoded in source code but are stored in databases, dashboards, or user-supplied parameters, which a simple code search would miss. OpenAI recommends checking its official API deprecations page directly, as replacement mappings and retirement dates can be revised.

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